brotherhood



(No Model.)

3 Sheets-Sheet 1. P. BROTHERHOOD.

VALVE GEAR.

No. 323,270. Patented July 28,1885.

(No Model.)

3 Sheets-Sheet 2.

P. BROTHERHOOD.

VALVE GEAR.

Patented" July 28, 1885.

Eva/e272??? kzerfirazerzoodf (No Model.) '3 Sheets-Sheet 3. P. BROTHERHOOD.

VALVE GEAR.

No. 323,270. Patented July 28, 1885.

, Ina/625071 jfizenfirozerzooaz M 0 j I L n s N. PETERS Pholo-Lflhognphur, Waflllnglan. DC.

PETER BROTHEBI-IOOD, OF LAMBETH, COUNTY OF SURREY, ENGLAND.

VALVE=GEAR.

SPECIFICATION forming part of Letters Patent No. 323,270, dated July 28, 1885.

Application filed March 2-1, 1895. (No model.) Patented in England March 6, 1885, No. 2,965.

To all whom it may concern:

Be it known that I, PETER BROTHERHOOD, acitizen of England, residing at Lambeth, in the county of Surrey, England, have invented a new and useful Admission Valve and Gear for Multiple-Cylinder Engines, (for which I have applied for a patent in Great Britain, dated March 6, 1885, No. 2,965,) of which the following is a specification.

My invention relates to the construction and arrangement of the admission-valve and gear for working it to be used in multiple-cylinder engines, particularly those of the kind known as Brotherhood engines, whether they are worked by steam or by compressed air, for torpedoes.

I will describe my invention, referring to the accompanying drawings.

Figure l is a vertical section of a three-cylinder Brotherhood engine. Fig. 2 is a vertical section on a plane at right angles to that of Fig. 1. Fig. 3 is a part section on the line a w of Fig. 2; and Fig. 4: is a plan showing part of the cam-path developed.

On a short spindle, A, let into the end of the engine-shalt with a sliding feather, I fix a barrel-cam, B, in the path of which is engaged a rounded roller, 0, mounted on one end of a lever, D, which is pivoted at E. In the other end 'of the lever D there is a hollow which engages a semicylindrical slide, F, pressed forward by a spring, Gr, said slide having its seat against the lower surface of the cylinder-cover M. This slide is, by means of the cam B and lever D, caused to move to and fro 011 the lower facing of the cylinder-cover H, through which there is a passage leading into the cylinder.

\Vhen the slide is in the dotted position F, the working fluid, which is supplied to the cavity K, passes into the cylinder propelling the piston until the cutoff is effected by the return of the slide, whereupon the piston is caused to continue its stroke by expansion of the fluid behind it. \Vhen the piston uncovers the lateral ports L, a portion of the fluid escapes into the central cavity of the engine, and as the piston makes its return-stroke, after covering the ports L, the residue of the fluid escapes through the port M in the joint of the connecting-rod.

It is to be understood that I do not claim as part of my present invention the use of ports, such as L- and M, for exhaust.

Having thus described the nature of my invention and the best means I know of carrying the same into practical effect, I clain1 l. The combination, with a cylinder of a multiple-cylinder engine, of the slide F, located entirely beneath and having its seat upon the lower surface of the cylinder-cover M, the lever D, pivoted between its ends, and the cam B, substantially as described.

2. The combination, with the cylinder of a multiple-cylinder engine, of asemi-cylindrical slide, F, seated upon the lower surface of a cylinder-cover, a lever, D, pivoted between its ends and having a cup-shaped outer end into which is seated the slide, and the cam B, substantially as described.

3. The combination, with the cylinder of an engine, of the slide F, seated upon the lower side of a cylinder-cover, the lever pivoted between its ends, a spring, G, carried by thelever and pressing the slide upon its seat, and

the cam B, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence oftwo subscribing witnesses, this 7th day of March, A. D. 1885.

PETER BROTHERHOOD. Witnesses:

'HERBERT E. DALE,

WALTER J AMES S. RERTER,

Both of 17 Gracechzu'ch St, London. 

